Take-up mechanism for looms.



UNITED STATES PATENT OFFICE. JAMES OSULLIVAN, OF BIDDEFORD, MAINE,ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE,

' MASSACHUSETTS, A CORPORATION OF MAINE.

TAKE-UP MECHANISM FOR LOOMS.

Specification of Letters Patent. Application filed May 9, 1908. SerialNo. 431,910.

No. 913,969. Patented March 2, 1909.

T 0 all whom it may concern:

Be it known that 1, JAMES OSULLIVAN, a citizen of the United States, andresident of Biddeford, county of York, State of Maine, have invented anImprovement in Take-Up Mechanism for Looms, of which thefollowingdescription, in connection with the accompanying drawing, is aspecification, like I numerals on the drawing representing like parts. i

This invention has for its object the production of novel take-upmechanism for looms having such a construction and arrangement of itsoperative parts that when the operation of the take-up is arrestedautomatically let-back is permitted, means being provided whereby thetake-up can be freed manually from the control of its actuating andlet-back devices, to permit ready movement of the cloth in eitherdirection.

The various novel features of my invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims.

Figure 1 is a front elevation of a suflicient portion of a loom to beunderstood, with my novel take-up mechanism applied thereto;

the gearing 7, 8 and 5 in Fig. 2, a portion of the latter gear onlybeing indicated by dotted lines.

The actuating device is shown as a pawl 16 cooperating with the ratchetand pivoted at 17, Fig. 2, on a pawl-carrier 18 fulcrunied on the stud12, the pawl having a rigidly con-- nected segmental extension 19carried upward and rearward above and at one side of the ratchet 15, asshown. A spring 20, Fi 2, interposed between the end of the paw carrier18 and the tail of the pawl 16 normally acts to press the pawl intooperative engagement with the ratchet. A lateral pin 21 on the free endof the extension 19 enters a slot 22 in a link 23, best shown in Fig. 2,pived arm 24 fast on a rock-shaft 25, which is adapted to be turned whenthe upturned arm 26 fast thereon, see Fig. 1, is swung outward, as bythe outward movement of the usual filling-fork slide when filling fails.Said rockshaft 25 may be arranged to effect the operation automaticallyof filling-replenishing mechanism, as in the loom shown in United StatesPatent No. 529940, granted November 27, 1894 to Northrop.

Fig. 2 is a left hand side elevation thereof, When the rock-shaft 25 isturned the link the nearer loom-side being broken out to 23 is raisedand the elevation of the extenshow arts of the mechanism beyond it. sion19 disengages the actuating pawl 16 Re erring to the drawings, the usualtakeup or sand-roll 1 has one of its journals 2 extended toward theloom-side 3 and is provided with an attached gear 4 in mesh with a largegear 5 rotatably mounted on a stud 6, Fig. 1, extended inward from theloom-side. The gear 5 meshes in turn with a pinion 7 secured to orforming part of a gear 8, said pinion and gear being mounted on the late9 bolted to the loom-side and constituting the usual change-gear,socalled, the gear 8 meshing with a pinion 10, see Fig. 2, fast on thehub of a large bevel-gear 11 rotatably I mounted on a fixed stud 12carried by the cloth-roll guide 13, the cloth-roll 14 being partly shownin Fig. 1 and in dotted lines Fig. 2. Rotatable with the bevel-gear 11is the ring-like take-up ratchet 15 which herein is rotated step by stepby a suitable actuating device, to be described, the train of gearingpreviously described transmitting the rotatixlrle movement of theratchet to the take-up l In order to avoid confusion I have omitted lfrom the ratchet, arresting take-upand letting back, as will beexplained.

A bifurcated detent-pawl 27 rocking on a fixed pivot 28 normally engagesthe ratchet 15, as shown in Fig. 2, to prevent retrograde movementthereof, a shelf-like projection 29 extending laterally from the innerside of the detent-pawl, above an adjustable bunter 30 set into theextension 19 adjacent a shoulder 31 thereon. 'Between the separatedsides of the pawl 27 is set a let-back awl 32, longitudinally slotted toembrace tie pivot stud 28 and slide thereon, the extent of such slidingmovement being limited by a set-screw 33 on the pawl, as is common inlet-back pawls.

lVhen the rocking of shaft 25 lifts the extension 19 to disengage theactuating pawl 16 from the ratchet 15 the hunter 30 engages the shelf 29and thereby lifts the toe of the detent-pawl 27 from the ratchet, andthe letback pawl 32 permits the ratchet to turn back one tooth, twoteeth or more, as desired, the parts returning to normal operativeposition when the shaft 25 resumes its noroted at its upper end to arearwardly extendmal position. Thus when a filling failure occurs thetake-up is arrested automatically and a predetermined let-backpermitted.

It is sometimes desirable or necessary for the weaver to turn thetake-up roll forward or back, and of course when it is to be turned backthe actuating and other pawls must be disengaged from the ratchet.Herein I have provided simple manually operated means to effect thisdisengagement when desired, and to that end I have pivotally mountedupon the shaft 25 a hub 34 having an upturned handle 35 and a dependingextension 36 bent rearward at its lower end and terminating in alaterally elongated foot 37 which extends beneath the pawls 27 and 32and normally is just in front of the shoulder or abutment 31.

l/l nen it is desired to operate the take-up by hand the weaver pullsthe handle 35 forward, thereby moving the foot 37 rearward and upward,first against the abutment 31 to act upon the extension 19 and move itrearward, the link 23 acting on the rear end of the extension to swingit upward on its pivot 17, disengaging the pawl 16 from the ratchet 15,the pawl 16 remaining in engagement with the ratchet until the rearwardmovement of the extension 19 and its upward swing will disengage thepawl. As the foot continues its movement the bunter 30 engages the shelf29, disengaging the detent pawl 27 and said foot then acts upon andlifts the letback pawl 32 from the ratchet, so that the latter isthereby freed from the control of all three pawls. Of course themovement of the extension 19 swings the pawl-carrier 18 about itsfulcrum, as will be perfectly clear, the slot and pin connection betweenthe extension 19 and the link 23 giving sufficient freedom of movementto prevent any turning of the arm 24 or the rocleshaft 25.

When the take-up is released as described it is conveniently turned ineither direction by means of a bevel pinion 38 in mesh with the gear 11and fast on a short shaft rotatably mounted in a bracket 39 on theloomside, the front end of the shaft being shaped at 40 to receive thesocketed hub of a suitable detachable handle 41, shown in dotted linesFigs. 1 and 2. The weaver can manipulate the handle 41 with one handwhile with the other hand he keeps the releasing handle 35 drawnforward.

I have herein shown the pawl-carrier 18 provided with a depending ear 42carrying a laterally-extended roll 43, best shown in Fig. 1, adapted tocooperate with an oppositely beveled cam 44 fast on a vibrating bar 45slidable in a guide 46 on the cloth-roll guide or stand 13. Said bar isvibrated in any suitable manner, cam 47, Fig. 2, on the cam-shaft 48 ofthe loom, the reciprocation of said bar acting to lift the roll 43 oneach stroke to thereby effect the feed movement of the pawl-carrier 18.

as by cooperation with a As thebeveled cam 44 is double the pawlcarrieris operated at each beat of the lay to effect the advance of the take-upmechani ism. A handle 49 on the ear 42 enables the weaver to move theactuating pawl by hand if necessary, to tighten up the cloth or for anyother reason.

Modifications in details of operation and arrangement may be made bythose skilled in the art without departing from the spirit and scope ofmy invention as set forth in the annexed claims.

Having fully described my invention,what I claim as new and desire tosecure by Letters Patent is 1. Take-up mechanism for looms, includingtakeup and let-back pawls, a swinging carrier for the takeup pawl,automatic means to act upon the said pawl-carrier and arrest theoperation of the take-up pawl and permit the let-back pawl to operate,and manually operated means movable at will into independent engagementwith and to move the pawl-carrier and to also directly engage thelet-back pawl, to simultaneously render inoperative the take-up andlet-back pawls, whereby the take-up mechanism is free to be moved ineither direction.

2. In take-up mechanism for looms, a rotatable ratchet, an actuatingpawl normally cooperating therewith, a pawl-carrier fulcrumed co-axiallywith the ratchet, a roll on the pawlcarrier, and a reciprocating memberhaving a cam to cooperate directly with the roll and effect intermittentfeed movement of the pawl-carrier.

tatable ratchet, an actuating pawl normally cooperating therewith, aswinging pawlcarrier having a fixed fulcrum, and a reciprocating andoppositely beveled cam to cooperate with and effect feed movement of thepawl-carrier on each stroke of the cam.

4. In take-up mechanism for looms, a rotatable ratchet, an actuatingpawl normally cooperating therewith, a pawl-carrier, means tointermittingly move it to effect feed of the pawl, detent and let-backpawls to with the ratchet, and means to automatically disengage theactuating and detent pawls from the ratchet and effect arrest of theratchet, said means including a projection on the detent pawl and abunter connected with the actuating pawl, said bunter engaging theprojection and disengaging the detent pawl when the actuating awl isdisengaged from the ratchet, the letack pawl permitting a predeterminedretrograde movement of the ratchet.

5. In take-up mechanism for looms, arotatable ratchet, an actuating pawlnormally cooperating therewith, a swinging pawl-carrier on which saidpawl is pivotally mounted, an extension on the pawl, detent and letbackpawls to cooperate with the ratchet, the

3. In take-up mechanism for looms, a ro' cooperate detent awl having alateral projection, an adjustahle bunter on the extension of theactuating pawl, and automatic means to lift the extension and disengagethe actuating pawl and the ratchet, the hunter at such time engaging thelateral projection on and lifting the detent pawl from the ratchet,permitting control thereof by the let-back pawl.

6. In take-up mechanism for looms, a rotatable ratchet, an actuatingpawl normally cooperating therewith, a swinging pawl-carrier on whichsaid pawl is pivotally mounted, an extension on the pawl, detent andletback pawls to cooperate with the ratchet, the detent and having alateral projection, an adjustab e bunter on the extension of theactuating pawl, and automatic means to lift the extension and disengagethe actuating pawl and the ratchet, the hunter at such time engaging thelateral projection on and lifting the detent pawl from the ratchet,permitting control thereof by the let-back pawl, combined with manuallyoperated means to engage and lift the extension and its bunter, todisengage the actuating and detent pawls from the ratchet, said meansincluding a foot to engage and move the let-back pawl from the ratchet.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

JAMES OSULLIVAN.

l/Vitnesses CARLOS O. HEARD, WILLIAM E. SHAW.

